Notes: This clip is from the BBC documentary "The Lost Civilization of Peru." The Moche Culture existed in northern Peru from around 100-800 AD and apparently collapsed during the period 500-750 AD, which coincides with the "Mega El Nino" and subsequent drought suggested by this ice-core evidence.
There is also some evidence that the Moche conducted ritual sacrifices during these storms:
"Evidence that violence was a significant part of Moche society was first identified in ceramic and mural art," according to About.com's Guide To The Moche Civilization. "Images of warriors in battle, decapitations and sacrifices were originally believed to have been ritual enactments, at least in part, but recent archaeological investigations have revealed that some of the scenes were realistic portrayals of events in Moche society. In particular, bodies of victims have been found at Huaca de la Luna, some of which were dismembered or decapitated and some were clearly sacrificed during episodes of torrential rains. Genetic data supports the identification of these individuals as enemy combatants." [Emphasis Added]


